Cinema 21:9 tv model 50pfl7956h crashing

Dear members,

I just received a brand new cinema 21:9 3D tv, model 50pfl7956h, and it crashes after about 15 minutes of screenplay. The screen goes black, sound turns off, red light is blinking on the TV, PC looses connection to the set and it's not responding to the remote anymore. When I push a button it only beeps.
I think it returns to steady red light and full service after a while, but to get it going sooner I have to pull the powerplug.
Looks to me like it's in some sort of overheated state.

This is happening when using as PC screen 1920x1080 (in WIDE mode) and also in 1080x720 3D mode. Those are the only modes I use because it's supposed to be used as a 3D gaming screen. But like I said: it also happens in normal 1920x1080 mode, so it's not the 3D that is crashing it which I suspected at first.

I have the latest firmware installed and settings are with screen and sound in game-mode and Ambilight on. The PC is connected through HDMI 1.4 cable to HDMI 1 (ARC).

Does anyone have a solution? Is it a known bug somehow, combining certain settings or so?
Please help because our guests can't play the beautifull Proun game now...

I'm already in contact with Philips service. We've tested with a different source (HDMI media-player) with same results. We're now testing with Ambilight off, see if that matters. I hope to arrange a pickup and repair soon because for me it looks like something I can't fix. I'm confident it'll be resolved quickly and we can enjoy it for many years to come. I just posted here to see if it was a known issue or not. I'll post a folow-up when things are solved. Thanks for your concern, Thomas.

best, Peter

PS Is it possible to log into the system and read the local logfiles somehow or is that something only the service-department is supposed to do?

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